Designed for those who use power yard tools for long periods, this shaft dampener from LimbSaver Comfort-Tech reduces up to 50 percent of felt vibration during continuous use of weed trimmers, brush cutters and other shaft-driven power tools. By reducing continuous vibration, your body will be less stressed, enabling you to work harder and more comfortably for longer time. Simply attach the dampeners directly onto the shaft of most power equipment (1- to 1-1/4-inch shafts). It's made from LimbSaver's proprietary NAVCOM technology (Noise and Vibration Control Material), which effectively absorbs a wide range of frequencies to dissipate energy and vibration. Durably built to be used outdoors in harsh environments, these shaft dampeners are waterproof and resistant to UV rays and solvents. This package includes two shaft dampeners. Using state-of-the-art technologies, LimbSaver produces highly effective noise- and vibration-dampening products for archery and firearm products, including bow stabilizers, recoil pads, rifle slings and more. Proudly engineered and hand-made in the USA, LimbSaver products are widely used by outdoor enthusiasts, military, law enforcement and more.